3.5×1又1/4+125%+1又1/2÷4/5
=(3.5+1+1.5)×1又1/4
= 7.5
975×0.25+9又3/4×76-9.75
= 9.75×(25+76-1)
= 975
9又2/5×425+4.25÷1/60
= 4.25×940+4.25÷60
= 4.25×(940+60)
= 4250
0.9999×0.7+0.1111×2.7
= 0.9999×(0.7+0.3)
= 0.9999
3.5×1又1/4+125%+1又1/2÷4/5
=(3.5+1+1.5)×1又1/4
= 7.5
975×0.25+9又3/4×76-9.75
= 9.75×(25+76-1)
= 975
9又2/5×425+4.25÷1/60
= 4.25×940+4.25÷60
= 4.25×(940+60)
= 4250
0.9999×0.7+0.1111×2.7
= 0.9999×(0.7+0.3)
= 0.9999